CN214752495U - Solid geometry demonstration device - Google Patents

Abstract

The utility model discloses a solid geometry demonstration device, which belongs to the technical field of teaching aids, and comprises a supporting table, wherein a holding tank is arranged on the supporting table, two first chutes are symmetrically arranged on the side wall of the holding tank, an cover plate is connected between the first chutes in a sliding manner, a first electric control telescopic rod is arranged at the bottom end of the holding tank, a supporting plate is arranged at the top end of the first electric control telescopic rod, a second chute is arranged on the supporting plate, a fixing groove is arranged at the bottom end inside the second chute, an rotating shaft is arranged in the fixing groove, one end of the rotating shaft is rotationally connected with the side wall of the fixing groove, and the other end of the rotating shaft penetrates through the fixing groove and is connected with a rotating handle; the utility model discloses a first screw thread and the cooperation of first slider and second screw thread and second slider, distance between two adjustable demonstration boards to adjust the distance between curtain board and the projecting apparatus, through the cooperation of the gear and rack on the demonstration board, further adjust the distance between curtain board and the projecting apparatus, conveniently demonstrate the geometric model of not equidimension type.

Description

Solid geometry demonstration device

Technical Field

The utility model relates to a teaching aid technical field, concretely relates to solid geometry presentation device.

Background

In the existing mathematical teaching process, in order to facilitate students to understand solid geometry knowledge, teaching demonstration is generally carried out, a common method is to simulate demonstration by using a 3D projector, but the existing demonstration device puts the 3D projector on a table or hangs in the air, a simulation graph is projected onto a wall surface, the position of the simulation graph is fixed, the distance between the projector and the wall surface is not adjustable, when the three-dimensional geometry of different types is displayed, the projection is unclear, the understanding is influenced, the existing demonstration device is heavy after all, the simulation graph can be installed again after being used once, the teaching time of teachers is wasted, the demonstration device can occupy the space after the end of the demonstration, and the teaching is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solid geometry presentation device for solve the problem that faces among the above-mentioned background art.

The purpose of the utility model can be realized by the following technical scheme:

a solid geometry demonstration device comprises a supporting table, wherein an accommodating groove is arranged on the supporting table, two first sliding grooves are symmetrically arranged on the side wall of the accommodating groove, a cover plate is connected between the first sliding grooves in a sliding manner, a first electric control telescopic rod is arranged at the bottom end of the accommodating groove, the top end of the first electric control telescopic rod is provided with a supporting plate, the supporting plate is provided with a second chute, a fixed groove is arranged at the bottom end of the second chute, a rotating shaft is arranged in the fixed groove, one end of the rotating shaft is rotationally connected with the side wall of the fixed groove, the other end of the rotating shaft penetrates through the fixing groove and is connected with a rotating handle, two first threads and two second threads which are opposite in thread direction are symmetrically arranged on the rotating shaft, the first screw thread is matched with a first sliding block, the second screw thread is provided with a second sliding block, and the first sliding block and the second sliding block are both provided with demonstration boards.

Furthermore, first slider is located the fixed slot with the second slider, and the width of fixed slot equals with the width of first slider and second slider, the demonstration board is located the second spout, and the width of demonstration board equals with the width of second spout.

Further, the bilateral symmetry of demonstration board is equipped with the mounting groove, the bottom side of mounting groove is equipped with the rack, the meshing has the gear on the rack, be equipped with the L connecting rod on the gear, be connected with the fixed plate between the L connecting rod, the symmetry is equipped with two automatically controlled telescopic links of second on the fixed plate.

Furthermore, a curtain plate is arranged on the top end of a second electric control telescopic rod on the first sliding block, and a projector is arranged on the top end of the second electric control telescopic rod on the second sliding block.

The utility model has the advantages that:

the utility model discloses a first screw thread and first slider and the cooperation of second screw thread and second slider, the distance between two demonstration boards of adjustable to adjust the distance between curtain board and the projecting apparatus, through the cooperation of the gear and the rack on the demonstration board, further adjust the distance between curtain board and the projecting apparatus, conveniently demonstrate the geometric model of not equidimension type, make the projection clearer, be convenient for the student to understand; simultaneously can accomodate demonstration equipment through the automatically controlled telescopic link of the first electricity that is equipped with in the holding tank, do not occupy the place, make things convenient for the teacher to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts;

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the structure on the support plate;

FIG. 3 is a schematic structural view of a support plate;

FIG. 4 is a schematic diagram of a construction of a demonstration board;

FIG. 5 is a schematic view of the support table.

The reference numbers in the figures illustrate:

1. a support table; 2. accommodating grooves; 3. a first chute; 4. a cover plate; 5. a first electrically controlled telescopic rod; 6. a support plate; 7. a second chute; 8. fixing grooves; 9. a rotating shaft; 10. rotating the handle; 11. a first thread; 12. a second thread; 13. a first slider; 14. a second slider; 15. a demonstration board; 16. mounting grooves; 17. a rack; 18. a gear; 19. an L-shaped connecting rod; 20. a fixing plate; 21. a second electrically controlled telescopic rod; 22. a curtain plate; 23. a projector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

A solid geometry demonstration device is shown in figures 1-5, and comprises a supporting table 1, wherein a holding tank 2 is arranged on the supporting table 1, two first sliding grooves 3 are symmetrically arranged on the side wall of the holding tank 2, a cover plate 4 is connected between the first sliding grooves 3 in a sliding manner, a first electric control telescopic rod 5 is arranged at the bottom end of the holding tank 2, the first electric control telescopic rod 5 can accommodate demonstration equipment into the holding tank 2 when in non-demonstration, the demonstration equipment occupies no area and is convenient for teachers to use, the demonstration equipment can be placed on the cover plate 4 to serve as a platform and is convenient for teachers to use by covering through the cover plate 4, a supporting plate 6 is arranged at the top end of the first electric control telescopic rod 5, a second sliding groove 7 is arranged on the supporting plate 6, a fixing groove 8 is arranged at the inner bottom end of the second sliding groove 7, a rotating shaft 9 is arranged in the fixing groove 8, one end of the rotating shaft 9 is rotatably connected with the side wall of the fixing groove 8, the other end of the rotating shaft 9 is connected with a rotating handle 10 through the fixing groove 8, the rotating shaft 9 is symmetrically provided with two first threads 11 and two second threads 12 with opposite thread directions, the first threads 11 are matched with a first sliding block 13, the second threads 12 are provided with a second sliding block 14, the first sliding block 13 and the second sliding block 14 are both provided with demonstration boards 15, through the matching of the first threads 11 and the first sliding block 13 and the matching of the second threads 12 and the second sliding block 14, the two demonstration boards 15 can be driven to move in the same direction or in opposite directions, so that the distance between the curtain board 22 and the projector 23 can be adjusted, the three-dimensional geometries of different types and sizes can be conveniently displayed, the first sliding block 13 and the second sliding block 14 are positioned in the fixed groove 8, the width of the fixed groove 8 is equal to the widths of the first sliding block 13 and the second sliding block 14, the first sliding block 13 and the second sliding block 14 can be avoided from shaking left and right in the fixed groove 8, the demonstration boards 15 are positioned in the second sliding groove 7, and the width of the demonstration boards 15 is equal to the width of the second sliding groove 7, can avoid demonstration board 15 to rock in second spout 7 like this, increase stability, demonstration board 15's bilateral symmetry is equipped with mounting groove 16, mounting groove 16's bottom side is equipped with rack 17, the meshing has gear 18 on the rack 17, be equipped with L connecting rod 19 on the gear 18, be connected with fixed plate 20 between the L connecting rod 19, the symmetry is equipped with two automatically controlled telescopic links 21 of second on the fixed plate 20, be located and be equipped with curtain board 22 on the top of the automatically controlled telescopic link 21 of second on first slider 13, be located and be equipped with projecting apparatus 23 on the top of the automatically controlled telescopic link 21 of second on second slider 14, through the meshing of gear 18 and rack 17, can drive fixed plate 20 and remove on demonstration board 15, thereby further adjust the distance between curtain board 22 and the projecting apparatus 23, and convenient to use.

When the device is used, the cover plate 4 is opened, the first electric control telescopic rod 5 is adjusted to drive the supporting plate 6 to ascend, the projector 23 and the curtain plate 22 are taken out, then the rotating handle 10 is rotated to drive the rotating shaft 9 to rotate, the two demonstration plates 15 are driven to move through the matching of the first screw thread 11 and the second screw thread 12 which are opposite in direction with the first slide block 13 and the second slide block 14 respectively, so that the distance between the curtain plate 22 and the projector 23 is adjusted, simulated solid geometric figures with different sizes are conveniently demonstrated, when the distance between the curtain plate 22 and the projector 23 is not enough, the sliding fixing plate 20 drives the fixing plate 20 to move along the direction of the demonstration plates 15 through the matching of the gear 18 and the rack 17, so that the distance between the curtain plate 22 and the projector 23 is further adjusted, solid geometric figures with different sizes are conveniently demonstrated, students can conveniently understand, the second electric control telescopic rod 21 can conveniently adjust the heights of the curtain plate 22 and the projector 23, after the demonstration was accomplished, first automatically controlled telescopic link 5 retracted, accomodate into holding tank 2 with the demonstration equipment in, cover apron 4 does not occupy the place, makes things convenient for the teacher to use.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (4)

1. A solid geometry demonstration device comprises a supporting table (1) and is characterized in that a containing groove (2) is formed in the supporting table (1), two first sliding grooves (3) are symmetrically formed in the side wall of the containing groove (2), a cover plate (4) is connected between the first sliding grooves (3) in a sliding mode, a first electric control telescopic rod (5) is arranged at the bottom end of the containing groove (2), a supporting plate (6) is arranged at the top end of the first electric control telescopic rod (5), a second sliding groove (7) is formed in the supporting plate (6), a fixing groove (8) is formed in the inner bottom end of the second sliding groove (7), a rotating shaft (9) is arranged in the fixing groove (8), one end of the rotating shaft (9) is rotatably connected with the side wall of the fixing groove (8), the other end of the rotating shaft (9) penetrates through the fixing groove (8) and is connected with a rotating handle (10), the symmetry is equipped with two first screw threads (11) and second screw thread (12) that the screw thread opposite direction on axis of rotation (9), the cooperation has first slider (13) on first screw thread (11), be equipped with second slider (14) on second screw thread (12), all be equipped with demonstration board (15) on first slider (13) and second slider (14).

2. The solid geometry demonstration device according to claim 1, wherein the first slider (13) and the second slider (14) are located in the fixing groove (8), and the width of the fixing groove (8) is equal to the width of the first slider (13) and the width of the second slider (14), the demonstration board (15) is located in the second sliding groove (7), and the width of the demonstration board (15) is equal to the width of the second sliding groove (7).

3. The solid geometry demonstration device according to claim 1, wherein the demonstration board (15) is symmetrically provided with mounting grooves (16) on both sides, a rack (17) is arranged on the bottom side of the mounting grooves (16), a gear (18) is engaged on the rack (17), the gear (18) is provided with an L-shaped connecting rod (19), a fixing board (20) is connected between the L-shaped connecting rods (19), and two second electrically controlled telescopic rods (21) are symmetrically arranged on the fixing board (20).

4. A solid geometry demonstration device according to claim 3, wherein a curtain plate (22) is provided on the top end of the second electric control telescopic rod (21) on the first slide block (13), and a projector (23) is provided on the top end of the second electric control telescopic rod (21) on the second slide block (14).

Images